/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.xml.security.utils.resolver;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Collections;
import java.util.Map;

import org.w3c.dom.Attr;

public class ResourceResolverContext {

    private static boolean allowUnsafeResourceResolving =
            AccessController.doPrivileged(
                    (PrivilegedAction<Boolean>) () -> Boolean.getBoolean("org.apache.xml.security.allowUnsafeResourceResolving"));

    private final Map<String, String> properties;

    public final String uriToResolve;

    public final boolean secureValidation;

    public final String baseUri;

    public final Attr attr;

    public ResourceResolverContext(Attr attr, String baseUri, boolean secureValidation) {
        this(attr, baseUri, secureValidation, Collections.emptyMap());
    }

    public ResourceResolverContext(Attr attr, String baseUri, boolean secureValidation, Map<String, String> properties) {
        this.attr = attr;
        this.baseUri = baseUri;
        this.secureValidation = secureValidation;
        this.uriToResolve = attr != null ? attr.getValue() : null;
        this.properties = Collections.unmodifiableMap(properties != null ? properties : Collections.emptyMap());
    }

    public Map<String, String> getProperties() {
        return properties;
    }

    public boolean isURISafeToResolve() {
        if (allowUnsafeResourceResolving) {
            return true;
        }
        if (uriToResolve != null) {
            if (uriToResolve.startsWith("file:") || uriToResolve.startsWith("http:")) {
                return false;
            }
            if (!uriToResolve.isEmpty() && uriToResolve.charAt(0) != '#' &&
                    baseUri != null && (baseUri.startsWith("file:") || baseUri.startsWith("http:"))) {
                return false;
            }
        }
        return true;
    }

}
